9.A mean computed in such a way that each data value is given a weight reflecting its relative importance is referred to as:a. a weighted mean.b. a trimmed mean.c. a heavy mean.d. an important mean.10.Suppose annual salaries for sales associates from a particular store have a bell-shaped distribution with a mean of $32,500 and a standard deviation of $2,500.Refer to Exhibit 3-3. The z-score for a sales associate from this store who earns $37,500 is:11.A numerical measure, such as a mean, computed from a population is known as a:12.The coefficient of variation indicates how large the standard deviation is relativeto the:
13.Which of the following is not a measure of dispersion?a. The standard deviationb. The interquartile rangec. The ranged. The 50th percentile14.Exhibit 3-2A researcher has collected the following sample data. The mean of the sample is5.351232Refer to Exhibit 3-2. The interquartile range is:15.Refer to Exhibit 3-2. The standard deviation is:16.μ is an example of a:17.The symbol σ ^2 is used to represent the:a. None of the other answers are correct.b. variance of the population.c. standard deviation of the sample.d. standard deviation of the population.18.The __________ denotes the number of standard deviations xi is from the mean .19.A(n) __________ is an unusually small or unusually large data value.20.The median of a sample will always equal the:21.The variance of the sample:a. can be negative.b. cannot be zero.
c. cannot be less than one.d. can never be negative.22.An important measure of location for categorical data is the:23.__________ can be used to determine the percentage of data values that must be within one, two, and three standard deviations of the mean for data having a bell-shaped distribution.24.The empirical rule states that, for data having a bell-shaped distribution, the percentage of data values being within one standard deviation of the mean is approximately:
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